Protein phosphorylation, protein folding, and proteolytic cleavage are all examples of
A) post-transcriptional control of gene expression and activity.
B) epigenetic control of inheritance.
C) repression of gene expression.
D) induction of gene expression.
E) post-translational control of gene expression and activity.
Answer: E
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A student poses the question: How does the presence of dissolved salt affect the freezing point of water? To answer this question, the student set up two conditions. In the first condition, the student added salt to water in a container and referred to this condition as the variable. In the second condition, the student did not add any salt to water in a second container and referred to this
condition as the control. The student took both containers and attempted to freeze the water at various temperatures to assess the freezing point. Would this be a valid experiment? A. Yes, because there is more than one variable. B. Yes, because there is one variable and a control C. No, because there is not more than one variable D. No because there is only one variable and a control
Y-linked traits are sometimes passed from fathers to daughters following recombination between the sex chromosomes
A. true B. false
A nasopharyngeal aspirate is cultured on Bordet-Gengou agar, and growth is observed. The colonies are also subjected to a direct fluorescent antibody (DFA) stain, which is also positive. On the basis of these findings, the antimicrobial therapy that should be administered to the pa-tient is:
a. azithromycin. b. gentamycin. c. streptomycin. d. imipenem.
In 2012, the International Olympic Committee began using tests that measure the levels and the body’s response to the
male hormone ____________________ as a means of distinguishing females from males when sex was que Fill in the blank(s) with the appropriate word(s).